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2 years ago

7

65 points! can someone help me understand this problem

1 answer:

DIA [1.3K]2 years ago

5 0

Answer:

117

Step-by-step explanation:

It would be angle 117, because angle V and angle O are the same size and shape.

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How to solve 421 divided by 2.54

irina [24]

Your answer should be 168.40

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3 years ago

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Samuel can type nearly 40 words per minute. Use this information to find the number of hours it would take him to type 3.8 × 105

lora16 [44]

Answer:

<h2>3.8x105=399</h2>

Step-by-step explanation:

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2 years ago

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5. Solve using any method.<br> y = -x + 8<br> y=x+4

vlada-n [284]

Answer:

<h2>x = 2, y = 6 → (2, 6)</h2>

Step-by-step explanation:

$\bold{ELIMINATION\ METHOD}\\\\\left\{\begin{array}{ccc}y=-x+8\\y=x+4&\TEXT{change the signs}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}y=-x+8\\-y=-x-4\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad0=-2x+4\qquad\text{add}\ 2x\ \text{to both sides}\\.\qquad2x=4\qquad\text{divide both sides by 2}\\.\qquad\boxed{x=2}\\\\\text{Put it to the second equation}\\y=2+4\\\boxed{y=6}$

$\bold{SUBSTITUTION\ METHOD}\\\\\left\{\begin{array}{ccc}y=-x+8&(1)\\y=x+4&(2)\end{array}\right\\\\\text{Substitute (1) to (2)}\\\\-x+8=x+4\qquad\text{subtract 8 from both sides}\\-x=x-4\qquad\text{subtract}\ x\ \text{from both sides}\\-x-x=-4\\-2x=-4\qquad\text{divide both sides by (-2)}\\\boxed{x=2}\\\\\text{Put it to the second equation}\\y=2+4\\\boxed{y=6}$

7 0

3 years ago

Please help me with this i beg of u plzzzzz

yarga [219]

Step-by-step explanation:

hope you get idea of graphing the four lines

8 0

3 years ago

5c + 16.5 = 13.5 + 10c c =

olga55 [171]

Answer:

3/5 or 0.6

Step-by-step explanation:

− 5 c + 16.5 = 13.5

− 5 c = − 3

c=3/5

c=0.6

4 0

3 years ago